Question

Question #efdd1

Answer 1

The product of reciprocals always equals 1!

Explanation:

Make sure that you understand that cosine is defined for all real numbers, but secant is only defined where cosine is NOT equal to 0. Therefore, the product `cos(x)sec(x)` = 1 everywhere that secant is defined.

cos(x) = 0 when x = odd multiples of `pi/2`